The 'lbus' is a network channel created between the LTSP client and the
session running on the server. It's a way of passing device events from
the thin client to the server session, so that cool things will happen,
like icons appearing on the desktop when a USB Memory stick is plugged
in.
lbuscd runs on the LTSP client and receives events from udev and also
accepts connections from the server session. When a new device event is
received, a message will be sent through the network connection to the
server.

• Led

• lbuscd